2188204641 has 24 divisors (see below), whose sum is σ = 3652871040. Its totient is φ = 1236350016.

The previous prime is 2188204637. The next prime is 2188204649. The reversal of 2188204641 is 1464028812.

2188204641 is a `hidden beast` number, since 2 + 1 + 8 + 8 + 2 + 0 + 4 + 641 = 666.

It is not a de Polignac number, because 2188204641 - 2² = 2188204637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2188204596 and 2188204605.

It is not an unprimeable number, because it can be changed into a prime (2188204649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 189525 + ... + 200738.

It is an arithmetic number, because the mean of its divisors is an integer number (152202960).

Almost surely, 2^2188204641 is an apocalyptic number.

2188204641 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2188204641 is a deficient number, since it is larger than the sum of its proper divisors (1464666399).

2188204641 is a wasteful number, since it uses less digits than its factorization.

2188204641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390365 (or 390362 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 2188204641 is about 46778.2496572927. The cubic root of 2188204641 is about 1298.2628950415.

The spelling of 2188204641 in words is "two billion, one hundred eighty-eight million, two hundred four thousand, six hundred forty-one".